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(No Model.) 2 Sheets. -Sheet 1.

H. B. HALL.

PUDDLING TOOL. No. 550,368. Patented Nov. 26, 1895.

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2 Sheets-Sheet 2.

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PUDDLING TOOL. v

No. 550,368. Patented Nqv. 26, 1895,

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ANDREW BYGRANAM.PHOTO-UTNQWASHINGTDKQC I UNITED STATES PATENT OFFICE.

HENRY B. HALL, OF LAUGHLINSTOWN, PENNSYLVANIA.

PUDDLlNG-TOOL.

SPECIFICATION forming part of Letters Patent No. 550,368, dated November 26, 1895.

Application filed January 14:, 1895- Serial No. 534,805. (No model.)

To all whom it may concern.-

Be it known that I, HENRY B. HALL, a citizen of the United States, residing at Laughlinstown, in the county of Vestmoreland and State of Pennsylvania, have invented a certain new and useful Improvement in Tools to be Used in Puddling-Furnaces and the Like, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to tools for stirring and agitating the molten mass of metal in the puddling-furnace; and its object is to provide a simple and efficient means for puddling the iron evenly, thoroughly, and continuously, and better than it can be done by the old hand process.

By the use of my improvement a large amount of labor is saved and the cost of puddled iron greatly cheapened.

The invention consists of the novel features of construction hereinafter set forth and described, and more particularly pointed out in the claims hereto appended.

Referring to the drawings, Figure 1 is a side view showing the tool in position, with the middle chamber of a puddling-furnace shown in section. Fig. 2 is an enlarged sectional view of water stem or shaft and pan. Fig. 3 is a plan view of the lower end of water stem or shaft looking upward. Fig. 4: is a plan view of lower end of inner tube of said shaft or stem looking upward. Fig. 5 is a perspective view of the tool. Fig. 6 is a perspective view of a modification of same. Fig. 7 is a plan of bottom view of a further modification. Fig. 8 is a side view of the last modification.

Like letters refer to like parts throughout the several views.

a represents the middle or puddling chamber of a puddling-furnace, which latter may be of any suitable construction-as, for example, that described and set forth in Letters Patent No. 472,759, granted to me April 12, 1892. b denotes the door or outlet of said puddling-chamber. c is the tool, made of iron or other suitable material, adapted to rotate on the bottom of said puddling-chamber a. This tool may vary in thickness, width, and also in shape. Its length corresponds to the diameter of the puddling-chaml ber.

It may be provided with ribs d on the bottom, as shown in Figs. 7 and 8, or it may have a smooth bottom. I prefer to make it without the ribs on the bottom, as the iron gums in between the ribs.

6 denotes the roof of the puddling-chamber, and f an iron plate, suitably supported and extending across the top of the furnace and a little above the same.

g denotes a shaft, which is carried in suitable bearings, one of said bearings being located in the top or roof of the'chamber a and the other located in the plate f.

h is a spiral spring resting on the collar h on the iron support 6 and supporting the weight of the shaft 9 by pressing upwardly against the collar 7c. The object of this spring is to relieve the tool 0 from the weight of the shaft g, for the pressure of the shaft upon said tool has a tendency to push down so hard upon the tool that the outer ends of the latter sometimes bend up a little, and if there is a rough place in the bottom of the puddlingchamber the action of the spring will aid the tool to more readily glide over it and not bend. The shaft g is a hollow pipe or tube made of iron or other suitable material, having a smaller pipe or tube l made of iron or other suitable material inside. The lower end of the outer pipe is closed and provided With an extension m, adapted to fit into an eye or slot at in the tool a. The upper part of said pipe is closed by the collar is. The lower end of the inner pipe is split and flared out, as at 0 0, so as to hold the inner pipe in the center of the outer pipe and to allow the free passage of water from the inner pipe to the outer one on all sides. Any other suitable means of holding the inner pipe may be used, but I prefer to use the construction above described. WVater is introduced,preferably under pressure, into the top of the inner pipe by any suitable means, flows downward through said pipe, thence upward in the outer pipe, out of the spout 19 into the pan q, encircling the shaft g, and thence off by waste-pipe q.

The shaft g may properly be called a waterstem, and is constructed as above described for the purpose of preventing that part of the shaft within the puddling-chamber from becoming too hot and fused with the charge. In fact, in practice by the use of this construction the shaft does not even become red.

It is not essential that the shaft gshould be high so that the lower end will come even with the roof of the puddling-chamber, so as to be out of the way for balling the iron,

which is done atthe end of thepuddlingpro cess. After the charge has been puddled, the

shaft g is lifted by raising the lever 0 resting on the fulcrum s, by pulling on the rope s,

the lever 0' having a forked connection 1' with the shaft g. The tool a is then removed. by tongs or other suitable devicesthrough the.

. door b.

15 is a cog-wheel rigidly fastened tothe Shaft I g, which meshes with the cog-wheelie, on the shaft 4;, to which power is applied by any suitable means-.as, for example, byrotating'the cone-shaped pulley w, provided with a cogwheel as, in gear with the cog-wheel 1 near the upper end of the shaft 1). The .wheeliis thrown out of gear by liftingthe stem or shaft-g by means of the lever 0', as above described,fand thrown into gear by releasing the .lever and.-

letting the shaft down into position. WVhen power is applied to the shaft o, the. shaft g is caused to rotate, which in turn causes the tool 0 to rotate.

. The rotation of the bar or tool a stirsup and.

agitates the charge of molten iron, causing hat I claim, and desire to secure by Letters Patent, is-

1. In a puddling furnace or other like structmeans for rotating said shaft, substantially as shown and described. a I

2. In a puddling furnace or other like structure, the combination of a vertical hollow shaft in which water is circulated, a rotary integral stirring plate supported on the hearth and loosely and detachably connected to the shaft midway of its ends, and means for rotating said shaft and plate, substantially as shown and described.

3. In a puddling furnace or other like struct- ,ure,,the combination of a tubular shaft closed at its lower end, having a suitable outlet and provided with an axial tube within, communicating with the said shaft, a rotary integral stirring plate supported onthe hearth, loosely and detachably, connected totlie shaft mid- .way of, its ends,.and meansfor rotating said .1; shaft and plate, substantially as shown and described.

4:. In a puddling furnaeeor other like structure, the. combination; of an upright rotary shaft, a rotary integral stirringplate loosely and detachably connected thereto midway of its ends, means for rotating-saidmshaft,and

meansfor sustainingtho weight of said shaft so that it; shall. eXertlno-pressure. upon the tool or .plate,, substantially as shown and described.

5, In a puddling furnaceor other like structure the combination of a shaft, arotarystirring tool loosely and detachably connected thereto, means forrotating said shaft, and a spring, as h, suitably supported upon a fixed bearing, as hf, andvsustaining the weight of i said rotary shaft, substantially as shown and described.

. In testimony whereof I have hereto aflixed my hand, this 8th day ofJanuai-y, 1895, in the presence of two witnesses.

IIENRY l3. HALL. x A Witnesses:

. ,FREDLULERY, JOHN 0. H03. 

